15. LIFE IN THE UNIVERSE

Is there life elsewhere in the universe? This question has
fascinated people for centuries. Finding life on another planet would
change our perspective on many scientific and philosophical issues.
We may soon discover simple life-forms on Mars or Europa. But most
people are hoping for something more than bacteria — we want
somebody to talk to.

Reading

Please read all of Chapter 18.

18.1

Life on Earth

18.2

Life in the Solar System

18.3

Life Around Other Stars

18.4

The Search for Extraterrestrial Intelligence

18.5

Interstellar Travel and Its Implications to Civilization

Online

Complete the Life in the Universe assignment, due Monday,
3 May 2010 at 9:00 am.